The effect of organically modified clay on the properties of self‐crosslinkable carboxylated acrylonitrile‐butadiene rubber (XNBR) and polychloroprene rubber (CR) blend is studied. Results of blends produced without crosslinking agents are compared with conventional sulphur cured compounds. Sulphur cured blends exhibit improved physical properties after the incorporation of organophilic‐modified clay. In contrast, the self‐crosslinked blends do not show any reinforcement after the incorporation of the organoclay. XRD spectra show an intercalation of polymer chain into the gallery gap of the clay in both cases. ATR‐IR, DMA and SEM studies of these composites confirm that organoclay particles constrain the self‐crosslinking mechanism. The influence of the organoclay on the crystallisation of CR is also shown. magnified image
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Das et al. (2008) studied this question.
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